for whats it worth...I have used SMC batteries for about a year now and haven't had any issues. I use them in my 1/10 2wd...new 1/10 4wd...(never a problem with any battery) 1/8 scale is really the test IMO..i run 2-3c charging on all my batteries (there is more to it..gen 1 rx8 ..1900.. geared right.. etc) and they always end up at 4.2 ...even with the 4 cell and crazy loads of 1/8 scale..IMO if they don't puff and get crazy on 1/8 scale...cost what they do.. then i'm sold for all my cars..